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Finding the Fourth Proportional to 186,224.96, 256,996.28 and 105,655.88

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Solution

The fourth proportional to 186,224.96, 256,996.28 and 105,655.88 is: 145,808.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,224.96 : 256,996.28 = 105,655.88 : x
  2. Step 2: Convert to fraction form
    186,224.96/256,996.28 = 105,655.88/x
  3. Step 3: Cross multiply
    186,224.96x = 256,996.28 × 105,655.88
  4. Step 4: Simplify right side
    186,224.96x = 27,153,168,120.13
  5. Step 5: Solve for x
    x = 27,153,168,120.13/186,224.96
  6. Step 6: Final answer
    x = 145,808.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.